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2.X – 2019-XX-XX

Samplers

MCMC

  • Added progress tracking (incl. acceptance rate), and a plotting tool for it.

2.0.3 – 2019-09-09

Samplers

PolyChord

  • Fixed too much oversampling when manual bloking (#35). Thanks Lukas Hergt (@lukashergt), Vivian Miranda (@vivianmiranda) and Will Handley (@williamjameshandley)
  • Fixed ifort compatibility (#39, PR #42). Thanks Lukas Hergt (@lukashergt)

MCMC

  • Fixed: using deprecated Pandas DataFrame method (#40). Thanks Zack Li (@xzackli)

Minimize

  • Added GetDist output for best-fit (ignore-prior: True)

Likelihoods

  • Added stop_at_error for likelihoods -- fixes #43. Thanks Lukas Hergt (@lukashergt)

Cosmology

  • Fixed cobaya-cosmo-generator in for Python 2 (#37, thanks Lukas Hergt, @lukashergt) and high-DPI screens (#41).

2.0 – 2019-08-20

General

  • Added fuzzy matching for names of modules and parameters in a few places. Now error messages show possible misspellings.
  • Modules can now be nested, e.g. planck_2018_lowl.TT and planck_2018_lowl.EE as TT.py and EE.py under folder likelihoods/planck_2018_lowl.

Getting help offline: defaults, and bibliography

  • cobaya-citation deprecated in favour of cobaya-bib. In addition to taking .yaml input files as below, can now take individual module names.
  • cobaya-doc added to show defaults for particular modules.
  • Added menu to cobaya-cosmo-generator to show defaults for modules.

I/O

  • Naming conventions for output files changed! *.updated.yaml instead of *.full.yaml for updated info, *.[#].txt instead of _[#].txt for chains, etc (see Output section in documentation).

Samplers:

  • New, more efficient minimizer: pyBOBYQA.

Cosmology:

  • Added full suite of Planck 2018 likelihoods.
  • Added late-time source Cl's as a cosmological observable (CAMB only, for now)
  • Changed capitalisation of some function and requests (deprecation messages and retrocompatibility added)

1.2.2 – 2019-08-20 (archived version)

General

  • Backported some bug fixes.
  • Fixed versions of external codes.

Cosmology:

  • Planck: Fix for calibration parameter being ignored in CMBlike version of lensing likelihood.

1.2.0 – 2019-06-18

General

  • Added --version argument for cobaya-run
  • Many bug-fixes for corner-cases

Post-processing (still BETA: fixing conventions)

  • Importance re-weighting, adding derived parameters, etc.

Collections

  • Now picklable!
  • Support for skip and thin

Samplers

Evaluate

  • Multiple evaluations with new N option.

PolyChord

  • Updated to version 1.16
  • Handles speed-blocking optimally, including oversampling (manual blocking also possible).

Likelihoods

  • Reworked input/output parameters assignment (documented in DEVEL.rst)
  • Removed deprecated gaussian

Cosmo theories:

  • Capitalization for observables now enforced! (fixed H=H(z) vs h ambiguity)
  • CAMB and CLASS: fixed call without observables (just derived parameters)

1.1.3 – 2019-05-31

Bugfixes (thanks Andreas Finke!)

I/O

  • Fuzzy-matching suggestions for options of blocks.

1.1.2 – 2019-05-02

Bugfixes (thanks Vivian Miranda!)

1.1.1 – 2019-04-26

I/O

  • More liberal treatment of external Python objects, since we cannot check if they are the same between runs. So force_reproducible not needed any more! (deprecation notice left)

1.1.0 – 2019-04-12

Python 3 compatibility – lots of fixes

Cosmological likelihoods

Planck

  • clik code updated for compatibility with Python 3 and modern gcc versions

Cosmological theory codes

camb

  • Updated to 1.0 (installing from master branch, considered stable)

classy

  • Updated to ...
  • Added P(k) interpolator

Samplers

MCMC

  • Manual parameter speed-blocking.

PolyChord

  • Now installable with cobaya-install polychord --modules [/path]

Cosmology input generator

  • Added "citation" tab.

1.0.4 – 2019-04-11 (archived version)

Many bugfixes -- special thanks to Guadalupe Cañas-Herrera and Vivian Miranda!

I/O

  • More permisive resuming.

Parameterization and priors

  • Made possible to fix a parameter whose only role is being an argument of a dynamically defined one.
  • Likelihoods can be used in dynamical derived parameters as chi2__[name] (cosmological application: added automatic consolidated CMB and BAO likelihoods).

Samplers

General

  • Seeded runs for evaluate, mcmc and polychord.

MCMC

  • Small improvements to callback functions.

PolyChord

  • Updated to PolyChord 1.15 and using the official GitHub repo.
  • Fixed output: now -logposterior is actually that (was chi squared of posterior).
  • Interfaced callback functions.

Likelihoods

Created gaussian_mixture and added deprecation notice to gaussian

Cosmological theory codes

General

  • Added P(k) interpolator as an observable (was already available for CAMB, but not documented)

classy

  • Updated to 2.7.1
  • Added P(k) interpolator

Cosmological likelihoods

DES

BICEP-Keck